Controller-regulator.



c. P. EBERSOLB. K

CONTROLLER REGULATOR. APPLIOATION FILED Dnc.16,19o7.

l899,71 7. Patented sept. 29, 1908.

1u: Nomus PETERS :o.,'wAsHlNa10N. n. r.

UNITED sTATEsPATENT OFFICE.

OYRUS P. EBERSOLE, OF KEOKUK, IOWA, ASSIGNOR, BY MESNE ASSIGNMENTS, TOAMERICAN AUTOMOTONEER COMPANY, OF PHILADELPHIA, PENNSYLVANIA, ACORPORATION OF PENNSYLVANIA.

CONTROLLER-RE G'ULATOR. j

Specication of Letters Patent.

:Patented sept. 29, 1908.

To all whom it may concern:

Be it known that I, OYRUS P. EBERsoLE, a citizen of the United States,residing at Keokuk, in the county of Lee and State of-Iowa', haveinvented new and useful Improvements in Controller-Regulators, of whichthefollowing is a full, clear, concise, and exact description, referencebeing had to the* accompanying drawing, forming a part of thisspeciication.

My invention relates to an improvement in the construction of controllerregulators for electric motors. The purpose and function of suchregulators is, as well'known to those skilled in the art, to compel theoperator to turn the line current into the motor windings by stepmovement of the controller, whereby the full-line voltage is preventedfrom being suddenly sent through the motor, and thereby forestallinginjury to the motor windirigs that would resultif the motor were startedwith the full-line current.

The specific object of my invention is to provide a yielda'ble clampingconnection between the hood of the controller regulator and thecontrollerhandle, so as to accommodate various sizes and makes ofhandle.

In the accompanyingdrawings, in which my invention is shown applied toany approved form of controller regulator, Figure l represents a topplan view of a controller regulator provided with my improvement, aportion of the hood being broken away for the purpose of showing thearrangement of the cams and stops on the base, as well as the initialposition of the pawlwith respect to said cams and stops. Fig. 2 is across-sectional view, showing the position of the pawl in its housing.Fig. 3 is a detailed cross-sectional view on line 3, 3 of Fig. 1.

The base 1 is rigidly secured to the Vtop 2 of the controller by anysuitable means, as by screws 3, assing through openings 4in the lugs 5.T is base is provided with a series of cams 9, (projecting toward thestops and in staggere relation therewith, as clearly shown in Fig. 1. Itwill thus be vseen that there is formed on the stationarybase anirregular or zig-zag path, in which vthe pawl on the hood is adapted totravel as presently explained.

Rotatably mounted upon the base 1 is a hood 10, havin l a downwardlyextendin portion 11, whic its snugly into the centra opening 12 of. thebase. The hood and base may conveniently be locked together by anyapproved means which will prevent separation of the parts, whilepermittingjrotatio'n of the hood on the base. For the sake ofillustration, I haveshown such locking means at right angles thereto,which is provided With a ball which seats in a socket formed in theinner face of one of the walls of the housing and is secured in place bya cap-plate 20. In its normal position the pawl, as shown in Fig. 1, isfree to the action of gravity. In this normal position the pawl restsagainst the rear wall of the housing. Looking at Fig. 2, it will,therefore, be seen that the awl is free to pendulate to the right andeft, as well as to move pivotally toward the observer, but that it isprevented from moving away from the observer by virtue of its abutmentagainst the rear wall.

On the projecting portion 22 of the controllershaft is removably mountedthe controller handle 23, which makes connection with the hood bypassing through the space formed 'between the lugs 24 and 25.` The lug24 is rigidlymounted on the hood, and may preferably be integraltherewith.

' Before I proceed to describe in detail my novel form of clamp betweenthe hood and the controller handle, I desire to direct attention brieflyto the operation of a controller regulator above described.

The hub of the controller handle 23 having been slipped over theprojecting portion 22 of the' controller shaft, so that the controllerhandle will rest in the space formed by the lugs 24 and 25, if it isdesired to start the mo-l tor, the handle is turned in a clockwisedirection. Thehood will rotate correspondingly. The pawl 18 will movefrom its initial position, indicated in Fig. 1, until it encounters thefirst of the cams 9, which will force it againstV the irst of the stops6, as indicated in dotted lines in Fig. 1. Inasmuch as the pawl cannotmove backwardly, the movement ofthe hood is arrested. In order to effectfurther movement, it is only necessary `the pawl is provided with an armextending lio the hood may be rotated by a step-by-step movement untilthe nal position is reached, when the full current is passing throughthe motor windings. To cut the motor out of circuit,'the controllerhandle is moved in a reverse direction. Inasmuch, however, as

-the pawl is free to move in a direction away from the wall 21, as aboveexplained, it will be apparent that the free reverse movement of thehood is not interfered with, for the reason that the pawl readily ridesover the cams and stops. v In order to accommodate any size or make ofcontroller handle, I mount the lug 25 yieldably upon the hood. Thisyieldable mounting may be brought about in several ways.

In the present instance, the lug carries an eX- tension 26, pivoted tothe hood at 27. Any

suitable spring means may be employed for urging the lug 25 toward thelug 24. One form of such means is shown in detail in Fig. 3. A spring 28is located in the housing 29 on the extension 26, and abuts at one endagainst said housing, and at its other end against a projection 30,rising from the hood. 'The spring, tending to expand, will force theextension 26, and, therefore, the lug 25 toward the lug 24, so that thecontroller handle in the space between these lugs will be firmly clampedto the hood, while, at the same time, different sizes of handles may beaccommodated.` Although the arrangement shown in Fig. 3 will of itselflimit the pivotal movement of the lug 25, I may provide additionallimiting means in the shape of a slot 3l `and a lug 32, in the extension26 and the hood. Other spring means than that illustrated in Fig. 3 willreadily suggest itself to those skilled in the art. For instance, it isplain to see that in lieu of a compression spring one might as well usean expansion spring, to accomplish precisely the same result in the sameWay, by merely changing the position of the projection 30 to the otherside of the housing 29, and having the expansion spring secured at oneend to the left Wall of the housing, as viewed in Fig. 3, and the otherend to the lug 30. In this arrangement thespring, tending to contract,would urge the lug 25 in a direct-ion toward the lug 24.

Although I have shown a specific vform of controller regulator inconnection with my invention, it is to be understood that this showingis merely for the sake of illustration, and to set forth the nature andobject of my invention in a full and clear manner. It is between thecontroller handle and the hood may be applied to any approved form ofregulator in which a connection between the controller handle and thehood is necessary for proper operation of the regulator.

Directing attention to Fig. 1, it will be noticed that when thecontroller handle is moved in a clockwise direction, it will bearagainst the rigid lug 24, on the other hand, when the controller handleis moved in the reverse direction, it will bring pressure upon thespring-pressed lug 25, which may yield in consequence, and thereby causethe controller handle to move out of engagement with the lug 24, asindicated in dotted lines in Fig. l. This position of the controllerhandle does not interfere with a proper connection between the hood andthe controller handle, for the rotation of the latter carries the hoodwith it by a corresponding movement.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

l. In a controller regulator, the combination with a stationary base ofa hood rotata- 'bly mounted thereon, cooperating means on said base andhood to regulate the movement of the hood in one direction, and a pairof lugs on said hood for receiving the controller handle there-between,one of said lugs being yieldably mounted, whereby the hood and thecontroller handle are firmly clamped together, while permitting oi'ready separation.

2. In a controller regulator, the combination with a stationary base,provided with cams and stops, of a hood rotatably mounted on said base,a pawl carried by said hood for cooperation with said cams and stops tocompel intermittent movement of the hood in one direction, withoutinterfering with the free rotation of the hood in the op )ositedirection, and a pair of lugs on said llood for receiving the controllerhandle there-between, one of said lugs being yieldably mounted, wherebythe hood and the controller handle are firmly clamped together, whilepermitting of ready separation.

3. In a controller regulator, the combination with a stationary base ofa hood rotatably mounted thereon, cooperating means on said base andhood to regulate the movement of the hood in one direction, and a pairof lugs on said hood for receiving the controller handle there-between,one of said lugs being yieldably pivoted, whereby the hood and thecontroller handle are Iirmly clamped together, while permitting of readyseparation.

4. In a controller regulator, the combination with a stationary base,provided with cams and stops, of a hood rotatably mounted on said base,a pawl carried by said hood for coperation with said cams and stops tocompel intermittent movement of the hood in one direction, withoutinterfering with the free rotation of the hood in the oppositedirection, and a pair of lugs on said hood for receiving the controllerhandle there-b etween, one of said4 lugs being yieldably pivoted,whereby the hood and the controller handle are firmly clamped together,while permitting of ready separation.

5. In a controller regulator, the combination with a stationary base ofa hood rotatably mounted thereon, co erating means on said base and hoodto regulJate the movement of the hood in one direction, a pair of lugson said hood for receiving the controller handle there-between, one ofsaid lugs being yieldably pivoted, whereby the hood and the controllerhandle are firmly clamped together while permitting of ready separation,and means for limiting the pivotal movement of said yieldable lu 6. In acontroIler regulator, the combination with a stationary base, providedwith cams and stops of a hood rotatably mounted on said base, a pawlcarried by saidxhood for coperation with said cams and stops to compelintermittent movement of the hood in one direction, Without interferingwith the free rotation of the hood in the op osite direction, a pair oflugs on said hood or` receivin the controller handle there-between, oneo said lugs being yieldably pivoted, whereby the hood and the controllerhandle are firmly clamped together while permitting of ready separation,and means for limiting the pivotal movement of said yieldable lug.

7. In a controller regulator, the combination with a stationary base ofa hood rotatably mounted thereon, coperating means on said base and hoodto regulate the movement of the hood in one direction, a lug rigidlymounted on said hood, a second lug spaced from said first-mentioned lugand pivotally mounted on the hood, the space thus formed between thelugs serving to receive the con- I troller handle, a housing on saidpivoted lug,

and a spring in said housing bearing at one end against the pivoted lugand at the other against the hood, to force said lug toward theiirst-mentioned lug, whereby the controller lhandle is yieldably clampedbetween said lu s.

g8. In a controller regulator, the combination with a stationary base,provided with cams and stops, of a hood rotatably mounted on said base,a pawl carried by said hoo'd for cooperation with said cams and stops tocompel intermittent movement of the hood in one direction, withoutinterfering with the free rotation of the hood 'in the oppositedirection, a lug rigidly mounted on said hood, a second lug spaced fromsaid first-mentioned lug and pivotally mounted on the hood, the spacethus formed between the lugs serving to receive the controller handle, ahousing on said pivoted lug, and a spring in said housing bearing at oneend against the pivoted lug and at the other against the hood, to forcesaid lug toward the iirst-mentioned lug, whereby the controller handleis yieldably clamped between said lugs.

9. A controller regulator comprising a base, a rotatable member, meansto regulate the movement of the rotatable member in one direction, andyieldable means for clamping the controller handle and said rotatingmember together.

10. A controller regulator comprising a base, a rotatable member, meansto re ulate the movement of said rotatable mem er in one direction, ahandle member, and means on one of said members for clamping togethersaid rotatable member and handle member yieldingly.

In witness whereof, I have hereunto subscribed my name in the presenceof two witnesses.

CYRUS P. EBERSOLE. Witnesses G. W. COX, v W. B. WILSON.

